My first dog had spay incontinence, and we kept doggy diapers on her. It was easier than putting pads down all over the place. You can get cute ruffly panties, too

. I've heard that, if you don't want to go all out with doggy diapers, you can use boys/mens briefs (depending on the dog's size), putting her tail through the crotch opening, and placing a sanitary pad in the proper place.